Safety-hook.



No. 630,064. Patented Aug. I, I899.

W. MARTINDALE. SAFETY HOOK.

(Application filed Feb-10, 1899.)

(Ho Mqdel.)

Whnesses; Wi Ilia n mar'figaum J Inventor,

13y 2 3/ Q35 @fiho rneys.

UNITED STATES .VILLIAM MARTINDALE,

PATENT OFFICE.

OF ALLISTON, CANADA.

SAFETY-HO'O K.

SPECIFICATION forming part of Letters Patent No. 630,064, dated August1, 1899.

Application filed February 10, 1899. Serial No. 705,218. No model.)

To wZZ whom it 'mwy concern:

Be it known that 1, WILLIAM MARTINDALE, a subject of Her Majesty theQueen of Great Britain, residing at Alliston, county of Simcoe,Provinceof Ontario,Canada, have invented certain new and useful Improvements inSafety-Hooks; and I do hereby declare that the following is a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

My invention relates to improvements in safety-hooks.

The object of my invention is to provide a safety-hook in which the useof a spring is obviated, in which the parts are held in positiveposition when locked, and which can only be opened by a pivotal movementof one of the members.

A further object is to provide a construction which is neat andattractive in appearance, durable in construction, simple and efficientin operation, and which can be made at a small cost of manufacture.

To these and other ends my invention consists in the improvedconstruction and combination of parts hereinafter fully described, andparticularly pointed out in the appended claims.

In the drawings, in which similar numerals of reference indicate similarparts in all of the views, Figure 1 is a perspective view of mysafety-hook in operative position. Fig. 2 is a similar view of the hookin its open position. Figs. 3, 4, and 5 are detail views of the parts.

Snap-hooks have generally been found with the snap portion either aspring or spring-operated. As a spring is liable to become twisted,800., allowing the parts to become of no value unless new springs areinserted, such construction is disadvantageous. Another disadvantageconsists in that the snap portion must be operated positively, which incold weather is very inconvenient. To obvi ate these and otherdisadvantages, I have pro vided a construction in which the use of aspring is eliminated, the safety portion being held in positive contactwith the hook portion by the pivotally-mounted member of the hook, beingreleased only upon passing said pivotal member to a predeterminedposition.

1 designates the hook portion, formed substantially as shown in Fig. 4,having its rear portion 2 formed with a rounded head, the face 3 beingflat. A recess 4 is formed in the portion 2, said recess being enlargedlater ally, as shown at 5, said recess being adapted to receive the rearend of the safety portion 6, the rear end of which is provided withlaterally-extending lugs 7, adapted to rest within the enlarged portionof the recess, as shown in dotted lines in Fig. 4. The front end of thesafety portion is adapted to fit Within a suit able recess 8, formed onthe front end of the hook portion 1, the end of the safety portion beingarranged to fit said recess.

9 designates the pivotally-mounted member, formed substantially as shownin Fig. 3, said member having a rounded portion 10 and face 11, adaptedto fit the rounded head and the face 3 of the portion 1. The portion 10is provided with a radial opening 12 at one side, said opening allowingof the opening of the safety-hook, as hereinafter set forth.. The member9 is also provided with a strap-connecting portion 13.

The members are assembled by the placing of the safety portion inposition and then placing the pivotal member on the head of the member 1and then connecting said member and the hook portion by a rivet 14,passed centrally through the rounded portions hereinafter described.

The operation of the device is exceedingly simple, it being apparentthat when the member 9 is in the position shown in Fig. 1 or any otherposition excepting that shown in Fig. 2 the safety portion will be heldpositivelyin its closed position. To open the hook, it is necessary onlyto move the member 9 to the position shown in Fig. 2, whereupon thesafety.

portion may be moved outwardly away from the hook portion.

Itwill be readily seen that to remove aring, &c., from the hook it willnot be necessary to manipulate any spring portion, the strap be inggrasped-and drawn to one side, rotating the member 9 on its pivot andfreeing the safety portion.

The advantages of this construction are many; but inasmuch as they areobviously apparent it is not thought necessary to point them out indetail.

While I have herein shown a preferred form of carrying my invention intoeffect, yet I do not desire to limit myself to such preferred details ofconstruction, but claim the right to use any and all modificationsthereof which will serve to carry into effect the objects to be attainedby thisinvention in so far as such modifications and changes may fallWithin the spirit and scope of my said invention.

Having thus described my invention, what,

I claim as new isv v 1. A safety-hook, comprising a hook member having aslot in its upper portion, asafety member removably pivoted in saidslot, and a strap member pivotally secured to said hook member andcovering said slot, said strap member controlling the movement of saidsafety member, substantially as described.

2. A safety-hook, comprising a hook mem- WILLIAM MARTINDALE.

Witnesses:

JAS. M. DUNCAN, Rom. Soo'r'r.

